JPS62129Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic relay, and more particularly to the structure of a movable electrode in a conductive liquid contact switch.

FIG. 1A is a schematic configuration diagram of a mercury contact switch, which is an example of a conductive liquid contact switch among conventional electromagnetic relays, and FIG. 1B is a detailed explanatory diagram of the main parts in FIG. 1A. In these drawings, the sealed container 1 includes fixed electrodes 2 ₁ and 2 ₂ , a stator 3d,
A movable electrode 3 having a yoke portion 3a, an armature 3b and a hinge spring 3c provided on the upper part of the stator 3d is disposed, and the lower end of the fixed electrode ₂₁ is applied to the upper end of the armature 3b by a predetermined contact force. The armature 3b is in mechanical contact, and the upper end of the armature 3b faces the fixed electrode ₂₂ at a predetermined distance. Further, the movable electrode 3
A hinge spring 3c is fixed to the yoke portion 3a, and this hinge spring 3c is fixed to the armature 3b. Furthermore, a conductive liquid 4 is housed in the sealed container 1 so as to wet the armature 3b and hinge spring 3c of the movable electrode 3, and a reducing gas or an inert gas is sealed in 5, which causes the conductive liquid 4 to deteriorate. This shows the internal space that prevents this.

In such a conventional mercury contact switch, the portion of the armature 3b below the fixed part with the hinge spring 3c is parallel to the hinge spring 3c, so the stiffness of the entire armature 3b of the movable electrode 3 is reduced. It remains almost constant during the operation up to the fixed electrode ₂₂ . Therefore, the combined force of the opening force of the whole armature 3b and the magnetic attraction force acting on the armature 3b and the fixed electrode ₂₂ increases rapidly as the armature 3b operates, so that the force between the armature 3b and the fixed electrode 22 increases rapidly. There was a drawback that the collision with 2 ₂ became more intense.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electromagnetic relay in which the armature gradually separates from the spring mechanism in order to eliminate the above-mentioned drawbacks of the conventional relay.

The electromagnetic relay of the present invention includes: at least one fixed electrode sealed in a sealed container; a stator sealed in the sealed container; a spring with one end fixed above the stator; A curved portion is formed such that a substantially central portion is fixed to the end and gradually moves away from the spring as it goes from this fixed point toward the stator, and the opposite side of the curved portion to the fixed point faces the fixed electrode. a movable electrode having an armature; and a movable electrode having an armature.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a schematic diagram of the main parts of an embodiment according to the present invention. In FIG. 2, a yoke portion 13a having a substantially F-shaped curved shape is formed on the upper part of the stator 13d of the movable electrode 13 disposed in a closed container (not shown).
A hinge spring 13c is fixed to 3a. Also, the armature 1 of the movable electrode 13 is in contact with a fixed electrode (not shown) arranged in the closed container.
3b has a curved portion _13b1 , and a hinge spring 13c is fixed to such an armature 13b.

In the electromagnetic relay according to the present invention having the above configuration, if the magnetic flux generated in the coil flows into the magnetic flux circuit (not shown) and the armature 13b of the movable electrode 13 moves to the right by the magnetic attraction force and operates, the magnetic attraction Power increases rapidly. However, since the contact portion between the armature 13b and the hinge spring 13c changes in a direction that shortens the length of the free portion of the hinge spring 13c, the stiffness of the entire armature 13b increases. Therefore, although the separation force of the armature 13b increases, the combined force with the magnetic attraction force is weakened, so that the collision between the armature 13b and the fixed electrode (not shown) can be alleviated. Furthermore, when the armature 13b opens, the opening force is large at first, but the opening force gradually becomes smaller. It can also alleviate conflicts with

It should be noted that the present invention is not limited to the above-mentioned embodiments, but has various applications and modifications. For example, the fixed electrode made of a non-magnetic material with which mechanical contact is normally made can be omitted.

As explained above, the present invention forms a curved portion on the armature that reduces mechanical wear, and therefore has the effects of improving reliability and simplifying design.

[Brief explanation of drawings]

FIG. 1A is an explanatory diagram of the main parts of a conventional electromagnetic relay, FIG. 1B is a detailed explanatory diagram of FIG. 1A, and FIG. 2 is a detailed diagram showing the main parts of an embodiment of the electromagnetic relay according to the present invention. It is an explanatory diagram. 13...Movable electrode, 13a...Yoke portion, 13
b... Contact, 13b ₁ ... Curved portion, 13c... Hinge spring, 13d... Stator.

Claims (1)

[Claims for Utility Model Registration] At least one fixed electrode sealed in a sealed container; a stator sealed in the sealed container; a spring having one end fixed to the upper end of the stator; A substantially central portion is fixed to the other end, and a curved portion is formed to gradually move away from the spring as it goes from the fixed point toward the stator, and the opposite side of the curved portion to the fixed point is attached to the fixed electrode. An electromagnetic relay comprising: a movable electrode having an opposing armature;